Eric Klinenberg

Out in space, comets don't seem that big compared to planets and all. But this chunk of rock and ice would rival the tallest mountains we know. Some have even created photos showing how it would tower over Los Angeles. Meanwhile in Australia, a Pizza Hut makes a major PR gaffe when it decides to throw in a free pet with every large pizza order. And the American-raised son of a terrorist decides to tell his story. All in this edition of the Global Scan.

In 1950, singles were just 22 percent of the adult population. Now, they've taken over. More than half of American adults are single, and that may have some surprising benefits — from the way people join civic groups and socialize to how they take part in the lives of their hometowns.

This week, meteorologists are predicting that heat waves will hit hard and heavy in the midwest. Heat waves are among the deadliest natural disasters in the U.S., so why don't we treat heat waves with more concern?

This week, meteorologists are predicting that heat waves will hit hard and heavy in the midwest. Heat waves are among the deadliest natural disasters in the U.S., so why don't we treat heat waves with more concern?

In 1950, singles were just 22 percent of the adult population. Now, they've taken over. More than half of American adults are single, and that may have some surprising benefits — from the way people join civic groups and socialize to how they take part in the lives of their hometowns.

Out in space, comets don't seem that big compared to planets and all. But this chunk of rock and ice would rival the tallest mountains we know. Some have even created photos showing how it would tower over Los Angeles. Meanwhile in Australia, a Pizza Hut makes a major PR gaffe when it decides to throw in a free pet with every large pizza order. And the American-raised son of a terrorist decides to tell his story. All in this edition of the Global Scan.

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